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TremPro® 644 High Temperature Silicone Sealant is a one-part, ready-to-use silicone sealant. It has a paste-like consistency and cures to silicone rubber at room temperature.
The paste-like consistency of TremPro 644 High Temperature Sealant is easily gunnable and can be applied to vertical and overhead surfaces where use of pourable self-leveling sealants would not be practical. This silicone sealant may be used in thicknesses up to 1/4" (6 mm) for bonding and sealing, joining metals and plastics, and electrical insulation. TremPro 644 High Temperature Silicone is specially designed for: High temperature situations, such as fireplace frames. Sealing joints between most non-porous materials such as glass, aluminum, metal and metal alloys.
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Most of the sealants have a 12-month shelf life based on the manufacturing date and batch numbers from the tubes or cases.
Tremco recommends that our sealants be applied at substrate temperatures of 40°F (5°C) and rising to 120°F (49°C).
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